Intermittent fountain drawing-pen.



0. N. BERGMAN & A. GRAN. INTBRMITTENT FOUNTAIN DRAWING PEN.

APPQIGATION FILED MAR. 31, 1913.

Patented Feb. 17, 1914.

1,087,425. rzgL- Erzi.-

Illlllllw COLUMBIA PLANQGRAPH Co..wAsHlNGTON, D. c.

para er INTERMITTENT FOUNTAIN DRAWING-PEN.

To all whom it may concern Be it known that we, OLor N. BERGMAN, a subject. of the King of Sweden, and AL- BERT GRAN, a. citizen of the United States,

residing at Chicago, in the county of Cook and State of Illinois, ha-ve invented certain new and useful Improvements in Intermittent Fountain Drawing-Fens; and we do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and userthe same.

This invention relates to improvements in fountain drawing pens.

@ne object of the invention is to provide a fountain drawing pen having an improved means for controlling the flow of and positively feeding the ink to the blades or point of the pen. l

Another object is to provide a pen of this character having means for opening or spreading the blades of the pen to a greater or less extent whereby light or heavy lines may be drawn and having means whereby the position of the parts when adjusted for drawing light yor heavy lines is indicated, thus permitting the parts to be readjusted to the same position after having been changed for any purpose.

With these and other objects in view, the invention consists of certain novel features of construction, and the combination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings; Figure 1 is a side view of our improved pen with 'parts broken away; and showing the cap in position thereon and partly in section; Fig. 2 is a central longitudinal section of the pen with the cap removed; Fig. 3 is a side view of the upper end of the barrel or body of the pen with the reservoir removed; Fig. 4 is a similar View taken at right angles to Fig. 3; Fig. 5 is a cross sectional view taken on the line 5-5 of Fig. 2; Fig. 6 is a similar view taken on the line 6--6 of Fig. 2; Fig. 7 is a similar view taken on the line 7-7 of Fig. 2; and, Fig. 8 is a side view of the cap provided to cover the blades of the pen when not in use; Fig. 9 is an enlarged cross sectional View of the blades taken on the line 9-9 of Fig. 2.v

Our improved pen comprises a handle 1, blades 2, a reservoir 3 and a cap 4 adapted to be engaged with the blades and lower end ofthe handle of the pen when the latter is Specification of Letters Patent.

Application filed March 31, 1913.

rammed ret. i7, 1era.

Serial No. 757,983.

not in use. The handle of the pen comprises a tubular body or barrel 5, the upper end of which is reduced to form an ink cylinder 6 at the inner end of which and at the upper end of the enlarged portion of the body of the handle are formed exterior screw threads 7 adapted to receivethe threaded inner end of the reservoir 3 which is engaged with and surrounds the ink cylinder 6 on the upper end of the body of the handle as shown. The body or barrel 5 of the pen is separated from the ink cylinder 6 by a diaphragm or partition 8 having a centrally disposed passage 9 the purpose of which will be hereinafter described. In the opposite sides of the cylinder 6 immediately above the diaphragm or partition 8 are fo-rmed ink passages 10 and 11 which com municate with the reservoir 3 and permit theink therefrom to flow into the cylinder. It will be noted that the passage 10 is longer or vextends up a slight distance beyond the upper end of the passage 11 for a purpose hereinafter described. The upper end or shank 12 of the blade is cylindrical and has a revoluble sliding engagement with the lower openend of the barrel or body 5 of the handle and in said shank 12 is a threaded bore 13 the lower or inner end of which communicates with the space between the blades of the pen as shown.

Slidably mounted in the inner end of the cylinder 6 is a combined valve and plunger 14 comprising a pair of disks of suitable material which-have a close sliding engagement with the inner walls of the cylinder as shown. The combined thickness of the disks forming the plunger 14 is less than the length of the shorter ink passage 11 in the lower end of the cylinder, so that when the plunger-is retracted or disposed in the inner or lower end of the cylinder 6 the ink from the reservoir 3 is permitted to flow into the cylinder above the plunger. The plunger 14 is connected inl any suitable manner with the outer or upper end of a tubular stem or shank 15 which extends through the aperture 9 in the diaphragm or partition 8 and through the barrel or body ofthe pen and the shank 12 of the blades and has its front end disposed between the blades 2 of the pen as shown. At a suitable position on the tubular shank 15 is shrunk or otherwise rigidly secured an exteriorly threaded sleeve 16 having a threaded engagement with the socket 13 in the shank 12 downwardly of the blades 2 whereby said blades may be screwed inwardly or outwardly on said sleeve and by means of which the blades are connected with the shank 15 so that when the blades are pushed inwardly or upwardly into the barrel or body 5 of the handle, the shank 15 and the plunger 14 on the upper end thereof will be projected up in the cylinder 6, thus forcing the ink from said cylinder down through the tubular shank 15 as will be hereinafter more fully described.

ln the upper portion of the tubular barrel 5 and a suitable distance from the diaphragm or partition 8 is arranged a disk or partition 17 between which and the partition 8 is placed a packing 18 of cork or other suitable material. On the upper end of the threaded sleeve 16 is a head 19 between which and the disk 17 is arranged a coiled spring 2O the pressure of which is eX- erted to project the blades 2 of the pen and to normally hold said blades in a projected position. When the blades are thus projected the tubular shank 15 will also be projected thereby retracting the plunger 14 into the inner or lower end of the cylinder 6 after these parts have been forced up or back into the cylinder 6 as hereinbefore described.

As hereinbefore stated the lower or outer' end of the tubular shank 15 extends downwardly between the blades 2 and on the inner sides of said blades at the lower end of the shank are formed inwardly projecting beveled or V-sha-ped blade spreading lugs 21, the upper edges of which when the blades 2 are screwed inwardly on the threaded sleeve 16 are brought into engagement with the end of the shank 15. The engagement of the lugs 21 with the end of the shank 15 will spread the blades 2 apart to a greater or less extent for drawing lines of different width. In order that the position of the blades when thus adjusted and the thickness of the lines drawn thereby may be indicated to permit the parts to be re-adjusted to this position or for drawing lines of the same thickness, an indicating scale 22 is provided, said scale being arranged on the lower end of the barrel or body 5 of the handle. On the shank 12 or inner ends of the blades 2 is an indicating mark 23 which co-acts with the marks on the scale 22 when the blades are turned to screw the same inwardly on the threaded sleeve 16. By this arrangement it will be seen that when the blades have been adjusted to draw a line of the desired width the position of the mark 23 with respect to the scale 22 is noted, so that when for any reason this adjustment has been changed and it is desired to bring the points back to the same position, it is simply necessary to turn the blades until the mark 23 is again brought to the former position on the scale 22.

Secured in and projecting beyond the in ner or lower end of the shank 15 is a tubular cylindrical valve casing 24: which extends downwardly between the lugs 21 which are recessed at their apeXes to receive said casing. Arranged in the tubular shank 15 of the plunger let is a needle valve 25 the lower end of which projects thro-ugh the casin(Y 211- and has one side recessed to form an ink discharging groove 26 the lower end of which is uncovered when the blades 2 and the shank 15 and plunger 1-1 carried thereby are pressed upwardly into the barrel of the pen thereby permitting the ink which is forced from the cylinder 6 into the tubular shank 15 by the upwardly movement of the plungers 14- to be discharged from the shank into the point or between the blades of the pen below the lugs 21 as will be readily understood. The upper end of the valve 25 is secured in the end of a head 27 which has a close fitting engagement with the upper or outer end of the cylinder 6 and is locked or fastened in said end of the cylinder by means of a locking stud 28 which is adapted to be engaged with and turned in a bayonet slot 29 formed in one side of the cylinder as shown. ln the head 27 is formed a transverse aperture 30 which is adapted to receive the point of any suitable instrument by means of which the head may be disengaged from the cylinder 6 and the valve drawn out of the tubular shank 15 for cleaning or other purposes after the reservoir 3 has been remo-ved from the barrel of the pen.

As hereinbefore stated the spring 2O normally holds the plunger 111 in the inner or lower end of the cylinder 6 in which position of the plunger' the outer ends of the ink passages 10 and 11 are uncovered so that the ink in the reservoir 3 is permitted to flow into the cylinder 6 which is thus always filled as long as the reservoir 3 contains any ink. l/Vhen it is desired to use the pen, the cap a is removed from the blades and the latter, together with the tubular shank 15 and plunger 14E are forced inwardly by engaging the point of the pen with a fixed surface and pushing downwardly on the handle or by grasping the blades of the pen and forcing the same inwardly. lThe plunger 14- when thus projected forces the ink from the cylinder 6 into and through the tubular shank 15. The inward or upward movement of the tubular shank 15 with the blades 2 also retracts the valve casino' 24: and uncovers the lower end of the ink groove or recess in this end of the valve 25 and thereby permits the ink to discharge from the lower end of the shank 15 and valve casing 211 between the points of the blades. As soon as pressure is removed from the blades the spring 2O will again project the blades and tubular shank 15 thereby closing the discharge grooves or recesses 26 in the end of the valve 25 and retracting the plunger 14 to the inner or lower end of the cylinder thus again uncovering the ink passages 10 and 11 and permitting more ink to flow into the cylinder G from the reservoir. By making the ink passage 10 of greater length than the passage 11 it will be seen that the ink from the reservoir will be permitted to flow more freely into the ink chamber as the air in the cylinder has more 'opportunity to escape when the ink flows into the cylinder. `When the ink has thus been supplied to the blades or point of the pen the latter is ready for use and the blades may be adjusted in the manner described to permit the drawing of light or heavy lines.

In order to prevent the tubular stem 15 of the plunger and the threaded sleeve 16 from turning when the shank 12 of the blades is screwed inwardly or outwardly on said sleeve for opening and closing the blades, the inner disk Of the plunger 14 is provided on its lower end with diametrically opposite lugs 14a which when the plunger and stem are retracted by the spring 20, will engage notches 14? in the partition 8 or adjacent portion of the barrel 5. In the outer side of the upper disk of the plunger 14 is also formed a notch 14c adapted to receive a screw driver for screwing the disk onto or off of the stem 15.

The cap 4 preferably has its inner end slitted as at 31 to permit said end to grip the lower end of the barrel or body 5 of the pen and thus obtain a firmer engagement therewith. The outer end of the cap .is preferably -knurled or roughened to permit a firm grip to be obtained thereon when the cap is removed. The inner end or shank 12 of the blades 2 is preferably provided with longitudinal slits to permit the shank to eX- pand into close engagement with the inner surface of the barrel or body 5 of the pen when said shank is screwed onto'the sleeve 16 as hereinbefore described.

From the foregoing description taken in connection with the accompanying drawings, the construction and operation Iof the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion,

K and the minor details of construction may be resorted to without departing from the principle or sacrificing any 'of the advantages of the invention as claimed.

Having thus described our invention, what we claim is:

1. A fountain pen comprising a tubular` ink ejecting plunger slidably mounted in said cylinder, a tubular stem connected with said plunger and communicating with said cylinder, means to adjustably connect said blades with said tubular stem, and a valve extending through said stein and operable to control the discharge of the ink from the lower end of said tubular stem between the points of the blades.

2. A fountain pen comprising a tubular barrel, an ink cylinder on the upper end thereof, and having therein ink passages, one of which is of greater length than the other, a reservoir arranged on the outer end of the lbarrel aro-und said cylinder, blades having a shank slidably and revolubly engaged with the lower end of said barrel, said shank having a threaded socket, a plunger slidably mounted in said cylinder, a tubular stem secured at its upper end to said plunger and opening into said cylinder, a threaded sleeve fixed on said stem and having a threaded engagement with the socket in the shank of the blades, a valve casing in the outer end of said tubular stem, a needle valve arranged through said stem and cylinder and having its lower end engaged with said casing and provided with a discharge groove, a head on the upper end of said valve and adapted to fit the upper end of said cylinder, means to lock said head in the cylinder, and a spring to project the blades of the pen and the parts actuated thereby.

3. A fountain drawing pen comprising a tubular barrel, an ink reservoir detachably engaged with the upper end thereof, blades having a revoluble and sliding engagement with the lower end of the barrel, an ink feeding mechanism comprising a plunger having a tubular stem extending downwardly between said blades, a sleeve xed on said stem and having a threaded engagement with' the inner end of the blades, beveled spreading lugs formed on the inner sides of the blades and adapted to be engaged with the end of said stem.

4. A fountain pen comprising a tubular barrel having thereon a scale, and on its upper end a cylinder, an ink reservoir surrounding said cylinder and communicating therewith, blades having a revoluble and sliding engagement with the lower end of said barrel, an ink feeding mechanism comprising a plunger slidably mounted in said cylinder, a tubular stem connected with said plunger and extending downwardly between said blades, a sleeve fixed on said stem and having a threaded engagement with the inner ends of the blades, spreading lugs formed o-n the inner sides of said blades and adapted to engage the end` of said shank when said blades are screwed inwardly on said sleeve thereby spreading said blades to a greater or less extent, said blades having thereon a mark adapted to co-act with the scale on the barrel of the pen whereby thc adjustment of the blades is indicatedu 5. A fountain drawing pen comprising a tubular barrel having on its upper end a cylinder, an apertnred partition between said cylinder and barrel, said partition having therein notches, an inl: reservoir on the upper end of the barrel, blades having a revoluble and sliding engagement with the lower end of the barrel, an ink feeding mechanism comprising a plunger slidably mounted in said cylinder and consisting` of a pair of disks having threaded apertures, a plunger operating stein having a threaded engagement at its outer end with said disks, lugs formed on one of said disks and adaptmemes ed to engage the notches in said partition, the other disk of said plunger having in its outer end a screw driver slot, a sleeve fixed on said stein and having a threaded engageinent with the inner end of said blades, and ineans whereby the blades are spread for drawing light or heavy lines In testinion5T whereof we have hereunto set our hands in presence of two subscribing 25 witnesses.

@LOF N. BERGMAN. ALBERT GRAN.

Witnesses CARL O. Bnno'rrr, RUTH LARSEN.

opiea er this patent may be obtained for ve cents each, by addressing; the Commissioner of Entente, Washington, IJ. C. 

